"The death of this HANO police officer is an unspeakable tragedy, and a vile and cowardly act. We are deeply saddened by this loss, and our hearts and prayers are with the officer's friends and family and with the entire HANO family during this very difficult time," said Landrieu in his statement.

NOPD Superintendent Michael Harrison said the unidentified 45-year-old officer had been working to secure a construction site when the shooting occurred. Additional details surrounding the investigation have not been released.

Landrieu continued his statement by saying:

"NOPD and HANO will work very closely to identify and arrest those responsible for this heinous assault. NOPD and HANO are part of the same close-knit law enforcement family that puts their lives on the line to protect and serve the people of New Orleans. Never are we more aware of the risk they face every day than we are on terrible days like this."